To improve and faciltate usage of the Objects Browser, I would suggest to align with the common file explorer behavior. Mainly I'm constantly struggling with the mandatory double-click for opening object groups (folder icons) in the Objects Browser. To me this is quite counterintuitive, at least if you are used to Windows and its file-explorer.
Maybe a first step towards this goal could be achieved (with assumingly low efforts) with a dropdown for "Single-click Action" in Preferences > Object Browser.
Maybe a first step towards this goal could be achieved (with assumingly low efforts) with a dropdown for "Single-click Action" in Preferences > Object Browser.